The question is incomplete. The complete question is :
The Jackson family is undecided about whether or not to buy a new car. If the probability is .9 that they will buy one, and if the probability is .3 that they will buy a Ford, and if the probability is .4 that they will purchase a car getting more than 20 miles per gallon, what is the probability that they will buy either a car getting more than 20 miles per gallon or a Ford, if all Fords get more than 20 miles per gallon?
Solution :
Given that :
The probability of buying a new car, 
Probability of buying Ford = 0.3
That is, if Jackson family buy a car that is a ford car, 
= 0.27
The probability for getting more than 20 miles per gallon = 0.4
That is if Jackson family buy a car that have more than 20 miles per gallon mileage, 
The conditions
All of the car have more than 20 miles per gallon mileage.
It means that buying a ford car is subset of getting more than 20 miles per gallon.

Therefore, the probability of buying a car either getting more than 20 miles per gallon or ford = 
Therefore,



= 0.36
Thus the probability that Jackson family is buying a car either getting more than 20 miles per gallon or ford is 0.36
Answer:
$53
Explanation:
Call option is $3
Exercise price is $50
The stock is currently priced at $49
It rises to $55 on the expiration date
Therefore the cost price at which the speculator will break even can be calculated as follows
= ($50-$3)+($55-$49)
= $47 + $6
= $53
The type of store that has high sales volume, shallow product lines, little service, and prices that are lower than supermarkets is known as discount stores.
<h3>What is a Discount Store?</h3>
This refers to the type of store which makes a bulk purchase of items and then sells them off at a lower price than they are worth.
Hence, we can note that a discount store operates in a way that enables them to engage in efficient distribution and bulk purchasing to meet the needs of their customers.
Read more about discount stores here:
brainly.com/question/1838431
<span>The debate about health-care reform, on both the Left and the Right, revolves almost entirely around changing the way we pay for health care. Progressives advocate government-run, single-payer monopsonies, whereas conservatives advocate consumer choice among private insurers.</span>